A sensor created at EPFL uses a microscopic pore to identify seven toxins produced by cyanobacteria in water. In tests, the system distinguished different microcystins and detected one of them at concentrations 40 times below the World Health Organization’s provisional guideline value.
The technology could evolve into portable devices for on-site monitoring, with real-time signals. The prototype still needs to be turned into robust field equipment, but the sensitivity demonstrated is an encouraging step forward for water safety.
